Massaging Foam Roller Ball

ADJUSTABLE VIBRATION: 4 levels of massage modes Electronic Foam Roller Ball with Massaging Function Unit combines traditional foam rolling with a strong massaging vibration to offer the ultimate tool for stress, muscle relief, pre-/post-exercise performance, and high-level athletes Unit features four different modes with different vibrating speeds ranging from 2000-6000 RPM Constructed of durable ABS and Silicone 100% harmless to skin At max speed, unit can function for up to 1.5 continuous hours of operation Unit is completely waterproof making it versatile for a variety of functions and environments